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TEA1721AT-N1 Fiches technique(PDF) 8 Page - NXP Semiconductors |
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TEA1721AT-N1 Fiches technique(HTML) 8 Page - NXP Semiconductors |
8 / 14 page TEA1721AT All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Preliminary data sheet Rev. 1 — 24 January 2012 8 of 14 NXP Semiconductors TEA1721AT Ultra-low standby SMPS controller with integrated power switch 8. Characteristics Table 5. Characteristics VCC = 20 V; VFB = 0 V; Rsource = 1.5 Ω; Tj-switch = 25 °C; Tj-controller = 25 °C; all voltages referenced to GND, positive currents flow into the IC, unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit Supply (Pin: VCC) ICC(startup)0V start-up supply current VCC =0V - -1.2 - mA ICC(startup)17V start-up supply current VCC = VCC(startup) --0.7 -mA ICC(energysave) supply current in energy save VFB = 2.8 V, non-switching 90 130 170 µA ICC(50kHz) supply current at 50 kHz 530 750 970 µA VCC(startup) start-up supply voltage 15 17 19 V VCC(stop) stop supply voltage undervoltage lockout of IC 7.5 8.5 9.5 V Vovp-VCC overvoltage protection voltage level on VCC 40 42 44 V Totp overtemperature protection threshold temperature on controller die -150 -°C Totp(hys) overtemperature protection temperature hysteresis -50 -°C Feedback (Pin: FB) Vovp-FB overvoltage protection voltage level on regulated flyback voltage 3.1 3.2 3.3 V Vsense(fb)CVB regulated flyback sense voltage in CVB mode 2.5 2.55 2.6 V Vsense(fb)CVB_low threshold flyback sense voltage for direct transition from CVB mode to CVC mode due to low output in burst mode operation - 2.4 - V Vsense(fb)CV regulated flyback sense voltage in CV mode 2.5 2.55 2.6 V Vth(det)demag(fb) demagnetization detection voltage level on FB pin 25 50 75 mV Oscillator (Pins: DRAIN and SOURCE) fburst burst frequency burst frequency in CVB mode, without jitter 390 430 470 Hz fjit/fsw jitter frequency to switching frequency ratio in all operation modes except in burst modes 579% |
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